EoW November 2010

technology news

Optical length and speed measurement

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In highly automated production processes measurement of operational throughput delivers essential data to control process parameters or, as in the manufacturing of piece goods, an automatic start and end recognitionmechanismallows autonomous length measurement. When working with hot, elastic, highly sensitive or dough-like materials, it is impossible to use tactile sensors such as odometers or tacho rolls. The accuracy of a mechanical sensor system is also reduced by slippage, which in practice can lead to measuring errors of 10% or more.

Non-contact length measurement from Zumbach ▲ ▲

In both cases, non-contact optical metrology provides significant benefits. With the Speel 3000, Zumbach offers a gauge that can be used for applications that demand a high degree of accuracy at high speeds, up to 3,000m per minute. Speel 3000 is available for a measuring distance of 300mm and is said to achieve an accuracy of 0.05% or better. The measured length is transmitted to subsequent electronics using an industry standard incremental interface. An alternative synchronous serial interface (SSI) is also available. In addition, an electrical output signal compatible with common incremental encoders is available and can be directly connected to control systems, electrical counters or frequency inverters.

The main features of Speel 3000 include: Detection of standstill • Detection of direction • Start and end recognition •

• • • •

Allows deviation of the measuring distance

Suits smooth and rough surfaces Long life LED illumination

Maintenance free

Zumbach Electronic AG – Switzerland

Fax : +41 32 356 0430

Email : sales@zumbach.ch

Website : www.zumbach.com

Xuanhua orders 3-roll reducing and sizing block

Xuanhua Iron & Steel (a division of the state-owned Hebei Iron & Steel Group) has placed an order for a 3-roll reducing and sizing block [RSB] with Friedrich Kocks GmbH & Co KG. The RSB is designated for the small bar mill, one of Xuanhua’s five new rolling mills currently under construction. The 3-roll block will be implemented behind the 2-high roughing and intermediate mill, which will consist of 18 HV stands. The scope of supply includes the 3-roll reducing and sizing block, with automatic quick stand changing system, and CAPAS, the computer-aided system for accurate adjustment of rolls and roller guides of 3-roll stands. Besides the supervision of erection and commissioning Friedrich Kocks will, for the first time, be responsible for the process and the equipment of thermo-mechanical rolling, which is also part of the scope of supply. Commissioning of the new 3-roll reducing and sizing block is scheduled for the end of 2011. Friedrich Kocks GmbH & Co KG – Germany Website : www.kocks.de

Email liz@intras.co.uk www.read-eurowire.com

bigstockphoto.com • Nattle

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EuroWire – November 2010